Aki Kanya

In a world where humans and insects are in conflict with each other, Mashiro heads for the mountains to eradicate the insectoid menace. There, he runs into a mysterious girl named Yuren, who lives with her mother on this hazardous hill riddled with bugs. Mashiro is shocked by this fact, but, perhaps, there is more to Yuren than meets the eye...

A snowy mountain. A creepy cabin. A woman Keiichi has never met. What's the reason behind all these seemingly unrelated things?